Not 100% clear what Pri Megadim holds
??? ????? ???? ???? ??? ????? ???? ??? ?”?
??? ??? ??? ???? ????, ?? ???? ????? ????? ???? ?? ??? ?????? ?????? ????? ?? ??? ????? ????, ????? ???? ??”? [???? ? ??”? ??? ?”? ?] ???, ??? ??? ????? ????”? ???? ????? ?? ???? ????? ????? ?????? ????? ???? ??? ?????? ??????, ??? ???? ??? ??? ???? ??? ??. ?????? ?????? ???”? ????? ????”? ?? ???? ???? ????”?, ?????? ????? ????? ?? ?? ??? ???? ?? ????? ?????.
He seems to only be concerned about a Mumar l’AZ and not a Mechalel Shabbos.